Re: [PATCH v7 1/4] gpiolib: Pass bitmaps, not integer arrays, to get/set array

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Hi Janusz,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on gpio/for-next]
[also build test ERROR on v4.19-rc2 next-20180905]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Janusz-Krzysztofik/gpiolib-Pass-bitmaps-not-integer-arrays-to-get-set-array/20180903-172834
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
config: x86_64-randconfig-f2-201835 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/phy/motorola/phy-mapphone-mdm6600.c: In function 'phy_mdm6600_cmd':
>> drivers/phy/motorola/phy-mapphone-mdm6600.c:165:36: error: passing argument 3 of 'gpiod_set_array_value_cansleep' from incompatible pointer type [-Werror=incompatible-pointer-types]
               ddata->cmd_gpios->desc, values);
                                       ^~~~~~
   In file included from drivers/phy/motorola/phy-mapphone-mdm6600.c:16:0:
   include/linux/gpio/consumer.h:400:20: note: expected 'int *' but argument is of type 'long unsigned int *'
    static inline void gpiod_set_array_value_cansleep(unsigned int array_size,
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/phy/motorola/phy-mapphone-mdm6600.c: In function 'phy_mdm6600_status':
>> drivers/phy/motorola/phy-mapphone-mdm6600.c:184:13: error: passing argument 3 of 'gpiod_get_array_value_cansleep' from incompatible pointer type [-Werror=incompatible-pointer-types]
                values);
                ^~~~~~
   In file included from drivers/phy/motorola/phy-mapphone-mdm6600.c:16:0:
   include/linux/gpio/consumer.h:387:19: note: expected 'int *' but argument is of type 'long unsigned int *'
    static inline int gpiod_get_array_value_cansleep(unsigned int array_size,
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/gpiod_set_array_value_cansleep +165 drivers/phy/motorola/phy-mapphone-mdm6600.c

5d1ebbda0 Tony Lindgren      2018-03-08  151  
5d1ebbda0 Tony Lindgren      2018-03-08  152  /**
5d1ebbda0 Tony Lindgren      2018-03-08  153   * phy_mdm6600_cmd() - send a command request to mdm6600
5d1ebbda0 Tony Lindgren      2018-03-08  154   * @ddata: device driver data
5d1ebbda0 Tony Lindgren      2018-03-08  155   *
5d1ebbda0 Tony Lindgren      2018-03-08  156   * Configures the three command request GPIOs to the specified value.
5d1ebbda0 Tony Lindgren      2018-03-08  157   */
5d1ebbda0 Tony Lindgren      2018-03-08  158  static void phy_mdm6600_cmd(struct phy_mdm6600 *ddata, int val)
5d1ebbda0 Tony Lindgren      2018-03-08  159  {
916010a73 Janusz Krzysztofik 2018-09-02  160  	DECLARE_BITMAP(values, PHY_MDM6600_NR_CMD_LINES);
5d1ebbda0 Tony Lindgren      2018-03-08  161  
916010a73 Janusz Krzysztofik 2018-09-02  162  	*values = val;
5d1ebbda0 Tony Lindgren      2018-03-08  163  
5d1ebbda0 Tony Lindgren      2018-03-08  164  	gpiod_set_array_value_cansleep(PHY_MDM6600_NR_CMD_LINES,
5d1ebbda0 Tony Lindgren      2018-03-08 @165  				       ddata->cmd_gpios->desc, values);
5d1ebbda0 Tony Lindgren      2018-03-08  166  }
5d1ebbda0 Tony Lindgren      2018-03-08  167  
5d1ebbda0 Tony Lindgren      2018-03-08  168  /**
5d1ebbda0 Tony Lindgren      2018-03-08  169   * phy_mdm6600_status() - read mdm6600 status lines
5d1ebbda0 Tony Lindgren      2018-03-08  170   * @ddata: device driver data
5d1ebbda0 Tony Lindgren      2018-03-08  171   */
5d1ebbda0 Tony Lindgren      2018-03-08  172  static void phy_mdm6600_status(struct work_struct *work)
5d1ebbda0 Tony Lindgren      2018-03-08  173  {
5d1ebbda0 Tony Lindgren      2018-03-08  174  	struct phy_mdm6600 *ddata;
5d1ebbda0 Tony Lindgren      2018-03-08  175  	struct device *dev;
916010a73 Janusz Krzysztofik 2018-09-02  176  	DECLARE_BITMAP(values, PHY_MDM6600_NR_STATUS_LINES);
5d1ebbda0 Tony Lindgren      2018-03-08  177  	int error, i, val = 0;
5d1ebbda0 Tony Lindgren      2018-03-08  178  
5d1ebbda0 Tony Lindgren      2018-03-08  179  	ddata = container_of(work, struct phy_mdm6600, status_work.work);
5d1ebbda0 Tony Lindgren      2018-03-08  180  	dev = ddata->dev;
5d1ebbda0 Tony Lindgren      2018-03-08  181  
ad5003300 Tony Lindgren      2018-05-31  182  	error = gpiod_get_array_value_cansleep(PHY_MDM6600_NR_STATUS_LINES,
5d1ebbda0 Tony Lindgren      2018-03-08  183  					       ddata->status_gpios->desc,
5d1ebbda0 Tony Lindgren      2018-03-08 @184  					       values);
5d1ebbda0 Tony Lindgren      2018-03-08  185  	if (error)
5d1ebbda0 Tony Lindgren      2018-03-08  186  		return;
5d1ebbda0 Tony Lindgren      2018-03-08  187  
ad5003300 Tony Lindgren      2018-05-31  188  	for (i = 0; i < PHY_MDM6600_NR_STATUS_LINES; i++) {
916010a73 Janusz Krzysztofik 2018-09-02  189  		val |= test_bit(i, values) << i;
5d1ebbda0 Tony Lindgren      2018-03-08  190  		dev_dbg(ddata->dev, "XXX %s: i: %i values[i]: %i val: %i\n",
916010a73 Janusz Krzysztofik 2018-09-02  191  			__func__, i, test_bit(i, values), val);
5d1ebbda0 Tony Lindgren      2018-03-08  192  	}
5d1ebbda0 Tony Lindgren      2018-03-08  193  	ddata->status = val;
5d1ebbda0 Tony Lindgren      2018-03-08  194  
5d1ebbda0 Tony Lindgren      2018-03-08  195  	dev_info(dev, "modem status: %i %s\n",
5d1ebbda0 Tony Lindgren      2018-03-08  196  		 ddata->status,
5d1ebbda0 Tony Lindgren      2018-03-08  197  		 phy_mdm6600_status_name[ddata->status & 7]);
5d1ebbda0 Tony Lindgren      2018-03-08  198  	complete(&ddata->ack);
5d1ebbda0 Tony Lindgren      2018-03-08  199  }
5d1ebbda0 Tony Lindgren      2018-03-08  200  

:::::: The code at line 165 was first introduced by commit
:::::: 5d1ebbda0318b1ba55eaa1fae3fd867af17b0774 phy: mapphone-mdm6600: Add USB PHY driver for MDM6600 on Droid 4

:::::: TO: Tony Lindgren <tony@xxxxxxxxxxx>
:::::: CC: Kishon Vijay Abraham I <kishon@xxxxxx>

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0-DAY kernel test infrastructure                Open Source Technology Center
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